Attqenets



(No Model.) '4 Sheets-Sheet 1.

W. A. S'HADD.

TRACTION ENGINE.

No. 355,891.. Patented Jan. 11, 1887.

k F M A Q N, I

, T 9' a R, I o X I O N NVENTOR M I V "WZM @AM V BY Alia/mu ATTORNEYS.

(No Model.) 4 Sheets-Sheet 2.

W. A. SHADE.

TRAGTION ENGINE. No. 355,891. Patented; 111.11, 1887.

SSWWW g WITNESSES: b 4 INVBNTOR: M 91 46. %a, &A W BY' mm ATTORNEYS.

, (No Model.) 4 SheetsSheet 3.

W. A, SHADD.

. TRACTION ENGINE.

No. 355,891. Patent an. 11, 1887.

WITNESSES INVENTOR M@% @Z 6A 6%ad 45.52% BY,

ATTORNEYS.

4 Sheets-Sheet 4.

(No Model.)

W. A. SHADD.

TRACTION ENGINE.

Patented Jan. 11, 1887.-

INVENTOR ATTORNEYS.

v WITNES N. FETERi Phowiilhogrnpher. Washlngwn. TLC.

' Dominion of Canada, have invented new and tures ofconstruction andcombinations of parts ATENT rrrcn. I

\VILLIAM A. SI-IADD, OF NORTH BUXTON, ONTARIO, CANADA.

TRACTION-ENGINE.

' SPECIFICATION forming part of Letters Patent No. 355,891, datedJanuary 11, 1687.

Application filed June 4, 1886. Serial No. 304,134. (No model.)

To aZZ whom it may concern:

Be it known that LWIL'LIAM A. SHADD, of North Buxton, in the Province ofOntario and useful Improvements in Traction-Engines, of which thefollowing is a full, clear, and exact description.

My invention relates to traction -engines adapted for plowing orthrashing or for haul ing ditching-machines or other loads.

The invention relates more particularly to an apparatus for guiding theengine, the object being to provide an effective, easily-handledsteering-gear, which, when adjusted by hand-levers, will be operated bythe power of the engine itself, and to so construct the en gine that itmay be turned short around to either side, and within its own length, ifnecessary. r

The invention consists in certain novel feaof the traction-engine, allas hereinafter fully described and claimed.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a side elevation of atraction-engine embodying myimprovements. Fig. 2 is a plan view thereof, with parts broken away andin section and with the boiler indicated in dotted lines. Fig. 3 is anenlarged vertical sectional elevation of theforward truck andsteering-gear of the engine and adjacent parts of the frame,steam-cylinders, and boiler. Fig. 4 is a central vertical sectionalelevation of the parts shown in Fig. 8, and taken at a right angletherewith. Fig. 5 is an inner face view, partly broken away, of one ofthe forward truck-wheels and applied clutch mechanism; and Fig. 6 is aview of the driving-gearing and its supporting-frame, taken on the line:0 m, Fig. 4, and as viewed in direction of the arrows.

The traction-engine is supported on forward wheels, A A, and hindwheels, B B, placed on axles a b, respectively, the axle I) havingbearings in the engine-frame O, on which the boiler D is mounted, andthe forward axle, at, having bearings at e c in a heavy archedbridge-piece, E, on which rests the forward downwardly-bowed headpiece,F, which is bolted to the forward end of the frame 0, on

which latter are supported the engine steamcylinders G, from pistons inwhich the rods 0 0 connect to disk-wheels c" on a shaft, 0 journaledacross the engine-frame. On the shaft C are fitted the eccentrics 0which connect to usual link-motions c", from which the valvestems c areoperated to actuate the valve for admitting the steam from the boiler Dto the steam-cylinders and exhausting the steam from the cylindersthrough proper pipe-connections. The link-motion is controlled by theanglelever 0. rod 0 and the lock-lever 0 Within reach of the attendant.

On the shaft O there is fixed a pinion, b, which meshes with agear-wheel, b and a gearwheel, b which meshes with wheel b fast on atransverse shaft, 1), journaled in the frame 0. The shaft 1) carriespinions b b at opposite ends, and these pinions mesh with gear-wheels bb", fixed to the opposite hind wheels, B B, of the engine, and wherebypower is transmitted from the shaft 0 driven by the pistons in cylindersO, to move the engine either forward or backward along the road.

The bridge-piece E and head-piece F, where they meet, are free to turnin a horizontal plane and make a kind of a fifth-wheel connection of theforward truck, a A A, of the engine with the engine-frame, and a steelwearplate, f, is interposed between the bridge and head E F, said platef being fastened preferably to the bridge E, and having aliporflange, f,which fits an annular recess in the head F, and prevents lateralmovement of these two parts E F.

The inner faces of the bridge and head EF are concaved vertically acrosstheir joint with each 0ther,to receive the convexed end parts,' 9 h, ortubes G H, respectively, which project above the head F and below thebridge E, and have fixed to them, respectively, the bevel gear-wheel Iand the bevel pinion J. The headpiece F is providedwithabackwardly-extending bracket or arm, F, in which. is journaled oneend ofashaft, K, which ranges longitudinally of the engine-frame, and isjournaled at its other end in a yoke or saddle, L, supported from themain power-shaft G of the engine, and from which power is transmitted torotate the shaft K by means of bevel-gears Z ,k on the shafts O and K,respectively. On the forward axle, a, there is fixed a bevel gear-wheel,

M, with which the aforesaid bevel pinion J engages, and on the shaft Kthere is fixed a bevel -pinion, N, which engages the bevel gear-wheel I,and whereby when motion is imparted to the two-part tubular shaft G Hmotion. also will be given the axle a from the main power-shaft O Theinner or meeting ends, 9 h, of the parts G H are formed withintermeshing teeth,or as a clutch, and whereby they may have partialdisengagement at any point around their periphery, to accommodate thepositions of the forward wheels, A A, as they move over uneven ground,and also to accommodate any slight rocking motion of the boiler on thewheeled trucks and frame.

With this construction it is obvious that there is nothing in the way ofthe free swinging movement of the forward axle and wheels entirelyaround under the boiler, or with the axle a in linewit-h the boiler, formaking very short turns in guiding or steering the engine to either sideby means of clutch mechanism connected to the-forward wheels, AA, asnext described.

The clutch mechanism arranged with the wheels A A is alike for eachwheel; hence a description of the clutch arranged'with wheel A willanswer for either wheel, as follows: To the spokes of wheel A there isbolted firmly a friction-rim, O, and outside of this rim there areplaced the opposite semicircular brake-shoes or plates, P P, which areconnected at opposite ends to rollers R R by means of links 1) p, theone ends of which are pivoted to the opposing ends of the brakeshoes PP, and their other ends are attached to opposite sides of the rollers RB. These rollers R R are journaled at diametrically-opposite edges of aheavy disk or plate, S, which is made fast by its hub s to thetruck-axle a. Bolts 1) p passed through radial slots 10 in the disk S,enter the opposite brake-shoes about at their centers, and keep theshoes in proper position as they are drawn inward against thefriction-rim O by devices next described;

To the hubs of the disk S there is fixed an arm, 15, to which there ispivoted an anglelever, T, which connects by rods or links it t with thecrossed outer ends, a u, of levers U U, which are fixed at their otherends to squared ends of the shafts of the opposite rollers,R R.

.The inner forked end of the lever T is connected at t t with a sleeve,T,which is adapted to rotate on the round portion 6 of the bridgepiecebearing e as the disk S and levers U U and T are carried around by andwith the axle a, it being understood that the engine-wheels A A areloose on the axle and revolve with the axle only when the brake-shoes PP are clamped to their friction-bands O. In a pcripheral groove of thesleeve T there is fitted loosely a collar, T to which atdiametricallyopposite points are pivoted the one ends of links t t whichare connected at their other ends to the forked end or arm 1; of anelbowlever, V, which is pivoted at its angle to the bridge-piece Eandextends by its other arm, 1), beneath the driving-pinion J, anddirectly under the center of the hollow two;part shaft G H. Anelbow-lever,W,,acting like the one V, is pivoted to the bridge-piece E,and connects by its forked arm w with links t t*, which are attached tothe collar T,next to the wheel A of the engine, and theother arm, 10, oflever W extends also beneath the hollow shaft G H. Suitable guide's, t,are provided on the bearings e for the passage of the links 29.

It will be seen that as the disk S, lever T, and sleeve T are turnedwith the axle a the sleeve T will slip around within the collar T andthe connection between thelevers U, T, and V at and with wheel A, andthe connection between the levers U, T, and W at and with wheel A willbe maintained, and whereby when the arms ow of levers V \V,respectively, are raised, the loose collars T next the wheels A A,respectively, will be slid from said wheels, whereby the levers U U willbe drawn downward at their ends to u and the rollers R Rwill be turnedto apply the brakeshoes P P to the friction rims or bands 0 on thewheels A A and release the brake-shoes therefrom, for purposes presentlyexplained.

To the arm 12 of lever V is connected one end of a rod,V,which passesupward through the hollow shaft G H, and at its upper end is connectedto one arm of anelbow-lever, V, which is pivoted at its angle to ahanger or bracket, F,fixed to the boiler-supporting crosstoo toothedplate, into which a trip on the lever may spring to lock the leverin-place.

To the arm w of lever W is connected one end of a tube, W, through whichthe rod V of lever V passes, and this tube WV is attached byits upperend to an elbow-lever, W which is pivoted at its angle to the bracket Fand has attached to its other arm one end of a rod, W the other end ofwhich is attached to an arm, W*, fixed to a shaft, w journaled on theengine-frame, and from a lever, W on shaft w a rod,W leads to a lever,like the one, X, above described and working along a locking plate atthe opposite side of the boiler. The arm 'w"of angle-lever W is bentaround the drive-wheel M on the axle a, and the anglelevers V W are bentto allow the rods V W with which they connect, to pass by thedriving-pinion N. (See Figs. 2 and 3.)

By operating the lever X, connected to the rod V", the brake shoes P Pwill be applied tothe rim 0 on wheel A, and by operating of the axle andwheels or A A, the brakeshoes of either wheel may be operated, as abovedescribed, irrespective of the position of the forward axle and wheels.

It is obvious thatwhen the brake'shoesP P are applied to the rims O ofboth the wheels A A. the wheels will be locked to the axle a, and theengine will travel straight ahead or straight backward. To steer theengine to the right hand when it is moving forward, the brake-shoes willbe unclutched or released from the wheel A, in which the axle a thenwill turn freely, and the unclutched or fast wheel A will turn the axletoward the right until the desired course is struck, whereupon the wheelA will againbe clutched by the brake-shoes to keep a straight course.

To steer the engine to the left hand, the brake-shoes will be releasedfrom the wheel A, which then will be loose on the axle, and the fastwheel A will turn the axle to the left to take the desired course,whereupon the wheel A will again be clutched to the shaft a, as willreadily be understood. By thus utilizing the power of the engine forsteering it a heavy engine of large power may be very easily handled,and by the described arrange ment of mechanism to impart the engines ownpower to turn the forward axle and wheels very short turns may be made,which makes the engine very sevieeable in plowing the soil.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. In a tractionengine, the combination, with the forward axle adaptedto swing in horizontal plane, and wheels loose on the axle, offriction-bands fixed on the wheels, brakeshoes adapted to clutch saidbands, and mechanism for imparting the power of the engine to theapplied brake-shoes of either wheel, or both wheels simultaneously,substantially as described, for the purpose set forth.

2. In a traction-engine, the combination, with the forward axle adaptedto swing in horizontal plane, and wheels loose on said axle, offriction-bands on the wheels, brake-shoes adapted to clutch said bands,mechanism for imparting the power of the engine to the appliedbrake-shoes of either wheel, or 'both wheels simultaneously, andconnections from the brake-shoes to handlevers for applying the shoes tothe friction-bands, which connections include rods passed through theaxis of horizontal rotation of the axle and wheels, substantially asdescribed, for the purposes set forth.

3. In a traction-engine, the combination, with a steeringwvheel, as atA, loose on'the engineaxle, and a disk, S, fixed to the axle, of afriction-band, O, fixed to the wheel, brakeshoes P P, loosely encirclingthe band, rollers R R and links 1) p, connecting the oppositebrake-shoes, P P, and levers U U,rigidly connected to rollers R R, andadapted to turn said rollers to press the shoes to the band 0,substantially as shown and described.

4. In a traction-engine, the combination, with a steering-wheel, as atA, loose on the engine-axle, and a disk, S, fixedto the axle, of afriction band, 0, secured to the wheels, brake-shoes P P, looselyencircling the band, rollers R R and links pp, connecting the op positebrake-shoes, levers U U, rigidly connected to rollers R R, links t t,connected to the crossed ends an of levers U U, and an elbowlever, T,connected to links t t and to a sliding sleeve, T, placed on theaxle-bearing, substantially as shown and described, whereby as thesleeve is shifted lengthwise of the axle the brake-shoes will be appliedto the frictionband on the wheel, as herein set'forth.

5. In a traction-engine, the combination, with a steering-wheel, as atA, loose on the engine-axle, a disk, S, fixed to the axle, africtionband, O, fixed to the wheel, brake-shoes PP, loosely encirclingthe band, rollers R R and linkspp, connecting the opposite brakeshoes,levers U U, rigidly connected to rollers R It, links t t, connected tothe levers U U, an elbow-lever, T, connected to links t t, a slidingsleeve, T, placed on the axle-bearing, a collar, T", loose on sleeve T,an elbow-lever, as at V, pivoted to the engine-frame, links t,connecting lever V with the sliding sleeve T, a rod, as at V, connectedto lever V and passed up through the axis of horizontal rotation ofthewheel-support, and connections from the lever V to a hand-lever, byoperating which the brake-shoes may be applied to and released from theband 0 on the wheel A, substantially as described, for the purposes setrigidly connected to said rollers R R, links 23 t,

connected to the levers U U, an elbow-lever,

T, connected to links it t, a sliding sleeve, T, placed on theaxle-bearing next each wheel, elbow-levers VWV, pivoted to the engine-frame and connected to links t leading to the sliding sleeves, arod, V, and tube W, connected to the levers V WV, respectively, andpassed up through the axis of horizontal rotation of the axle andwheels, and connections from the parts V W to independent hand-levers,by operating which the brake-shoes may be applied to and releasedfromthe friction-bands O G of either or both wheels A A, substantiallyas described, for the purposes set forth.

7. A traction-engine comprising the following elements: a frame, 0,carrying the boiler and steam cylinders, a main driving-shaft, 0 on saidframe and rotated by connections from the steam-cylinders, reardriving-wheels, B B, driven from the shaft 0 forward wheels, A A,mounted on a shaft, a, journaled in a bridgepiece, E, a head-piece, F,fixed to the frame C, a hollow two-part shaft, G H, journaled in theparts E F, and having ooncaved end parts,

g h. formed as a clutch, gears I J 'on the shaft G H, a gear-wheel, M,on axle a, a shaft, K, journaled in head-piece F and in the engineframe,a pinion, N, on shaft K, meshing with wheel I, and pinions lie on theshafts O K,

respectively, substantially as described, for the purposes set forth.

8. A traction-engine comprising the following elements: a frame, 0,carrying the boiler and steam-cylinders, a main driving-shaft, O, onsaid frame and rotated by connections from the steam-cylinder, reardriving-wheels, B B, driven from shaft 0, forward wheels, A A, mountedon a shaft, a, journaled in a bridgepiece, E, a head-piece, F, fixed toframe 0, a hollow shaft journaled vertically in the parts E F, gears I Jon said shaft, a gear, M, on axle a, a shaft, K, journaled in head-pieceF V and in the engine-frame, a pinion, N, on shaft K, meshing withgear-wheel I, driving-pinions Us on shafts O K, friction-bands O O,fixed to the wheels A A, disks S S, fixed to the axle next said wheels,brake-shoes P P, encircling the bands, rollers R R and links p 1),connecting the brakeshoes of each wheel, levers UU, rigidly connected torollers R R, and adapted to turn said rollers to press the brake-shoesto the bands 0, and connections from the levers U U at each wheel A A tohand-levers for applying the brake-shoes to the friction-bands, saidconnections including rods, as at V W, passing through the tubular shaftconnecting the parts E F, substantially as described, for the purposesset forth.

WILLIAM A. SHADD.

Witnesses:

JEROME EDDY, GARRISON SHADD.

